Résumé
This paper examines the effect of living in vulnerable zone in term of nitrateson property prices using a change in the geographical delimitation of the zone inFrance. Using an identification strategy based on a spatial difference-in-differencesspecification, we show that the 2012 revision policy decreases significantly propertyprices not only in areas that becomes vulnerable at the time of the policy but also inareas that were already considered as vulnerable before the policy change